For Shinagawa Menki Mighty 50 This is the size 12 cutting blade. Used for about 4 and a half years, but I am selling it due to the closure of my business. It has a reasonable amount of wear and rust, but it works without any problems. Please check the photos for the condition. As this is a used item, please refrain from purchasing if you are sensitive to such things or if you are looking for a perfect item. No claims or returns are accepted after purchase.